"It's amazing how in love I am with this little person I've only seen on a black and white screen. I'm starting my own family and there is no other feeling like it," she added.

Ruah and Olsen -- the older brother of NCIS: Los Angeles star Eric Christian Olsen -- met on the set of the show. David Olsen is a former Navy SEAL who works as a stunt double on the CBS drama, which debuts its new season September 24.